dye|World dye variety

Name:C.I.Direct Brown 7,C.I.30035

Molecular Structure: trisazo class

C.I.Direct Brown 7,C.I.30035,744.71,C31H26N10Na2O6S2,Paradiazol Brown N

Molecular Formula:C₃₁H₂₆N₁₀Na₂O₆S₂

Molecular Weight: 744.71

CAS Registry Number:

Manufacturing Methods : 4-(4-Aminophenyl)benzenamine double nitriding, and 2,4-Diamino-5-methylbenzenesulfonic acid coupling, and then and 4-Aminobenzenesulfonic acid diazo, and Benzene-1,3-diamine coupled to accidentally coupled nitrogen compounds.

Properties and Applications: brown. Soluble in water for orange brown, soluble in ethanol is palm yellow light. The strong sulfuric acid for sauce red to red light brown, for yellow brown after diluted. The dye solution to join strong hydrochloric acid have yellow olive brown precipitation; Add thick sodium hydroxide solution for orange brown, have precipitation.

List of Suppliers:

Paradiazol Brown N( Francolor Pigments SA )